Effect of Superimposed Low Frequency Oscillations on the Static Creep Behaviour of Al–1 wt% Si and Al–1 wt% Si–0.1 wt% Zr–0.1 wt% Ti Alloys

Transient and Steady State Creep of Al-10 wt% Ag and Al-22 wt% Ag Alloys Containing ??- and ?-Precipitates

“…It is worth noting that the transient stage of both alloys is characterized by a short duration time (%3-5 min). The transient creep stage can be described by [14] were correlated from the relation between ln e tr and ln t at different aging and testing temperatures for different aging times. The parameter n was determined from the slopes of the straight lines obtained.…”

“…Increasing n, b and e st with increasing testing temperature can be explained in view of an easier motion of dislocations already existing, where the thermal energy introduced facilitates the dislocation motion by helping it to overcome the precipitates which act as barriers [14].…”

Effect of cyclic stress reduction on the creep behaviour of Al-40wt%Zn alloy

“…3 of the distribution of Zn atoms in the a-phase at higher temperatures [1,19]. The external elastic energy due to cyclic stress reduction facilitates the motion of dislocations during creep process which enhances the rate of recovery and shortens the duration of the process [20]. The anomalous behaviour of creep strain level observed at 603 K in Fig.…”

Effect of structure transformation on the creep characteristics of Sn–3wt% Bi alloy

“…A marked dependence of the value of β on the steady state creep rateε ss was previously observed [25]. The relation representing this dependence is:…”